The aspect ratio is the relation between the horizontal and vertical sizes of the photo. To calculate the aspect ratio simple divide the width or a photo by its height. For example TV in normal mode has an aspect ratio of 4:3 or in other words if we were to divide the width of the screen by its height the result would be 4/3. Wide-screen TV format has an aspect ratio of 16:9.
Small digital cameras have an aspect ratio of 4:3, the same as the standard television screen.
Some small digital cameras can also be set to an aspect ratio of:
4:3 and 3:2 and 16:9
Most DSLR (digital single lens reflex) cameras have an aspect ratio of 3:2
The standard 6 x 4 inch photo paper has an aspect ratio of 3:2
which is also the aspect ratio for 35mm film.
So, if possible, set the camera to 3:2 to match 6 x 4 inch paper.
Most photo paper standards were set about 100 years ago.
10 x 8, 7 x 5 and 5 x 4 were the size of the film used in the original "press" cameras.
In this day and time, there are no new cameras that have such aspect ratios.
The 6 x 4 inch paper happened sometime after the 35mm camera became popular. Over 50 years ago.
Before I send any of my 4:3 photos to be printed, I use software to crop them the a 3:2 aspect ratio. That lets me decide what gets cropped out.
It would be nice if photo paper manufacturers came out with a standard paper for 4:3 aspect ratio.
Hello, I have a Canon SD990 IS camera and would like to get prints 4x6. However, photos are 4x5.33 with my camera and I always have to loose a little bit from the top and from the bottom of the photos. I do not understand why photo centers do not offer the possibility to print 4x5.33 on 4x6 paper leaving white the area from 5.33 to 6, so we could cut this white and get in a simple and cheap way 4x5.33 prints. Why do they have to increase image up to 4.5x6 so they cut 0.5 inch from top and bottom to get 4x6 ?
My camera offer the possibility of panoramic format which is 4416x2480 which corresponds to a ratio of 1.78/1 compared to 1.5/1 of that of 6x4 prints. This means a ratio of 7.12x4 compared to 6x4. If I'll go with such photos for prints at any photo center, they'll maintain my 4 inch width and cut symmetrically the half of 1.12 inches at right and left ? Or they'll reduce my image to fit the 6 inches length and leave white at the top and at the bottom ?
Finally, could you recommend me some compact flash digital cameras that offer the possibility to shot photos in 4x6 format ?